>
> This doesn't work:
>
> create function exc_using(varchar) returns varchar
> as $$
> declare v varchar;
> begin
> execute 'select upper($1)' into v using ('aa');
it cannot work. Your parameter is row. But
into v using 'aaa' doesn't work too :(
ERROR: failed to find conversion function from unknown to text
CONTEXT: SQL statement "select upper($1)"
you have to specify type: use argument, variable or casting
.... using text 'aaa'; or select upper($1::text)
It is question for Tom. Why prepared statement cannot cast from literal to text
http://www.nabble.com/Blowback-from-text-conversion-changes-t3977711.html
>
> I also noted that the patch makes USING a keyword. Not sure if we care
> about that or not.
>
I am afraid to change well know syntax (SQL/PSM use it in same context too).
Pavel
